Device, system, and method of providing biasing power

Abstract

Device, system, and method of providing biasing power. For example, an apparatus includes a voltage-controlled current source to provide biasing current to a Radio Frequency power amplifier based on a voltage of an incoming signal indicating a command to activate the Radio Frequency power amplifier, the incoming signal received from a Radio Frequency baseband module; and a current-reducing circuit to reduce the biasing current if the voltage of the incoming signal is greater than or equal to a voltage overdrive threshold.

1. An apparatus comprising:
 a voltage-controlled current source to provide biasing current to a Radio Frequency power amplifier based on a voltage of an incoming signal indicating a command to activate the Radio Frequency power amplifier, the incoming signal received from a Radio Frequency baseband module; and 
 a current-reducing circuit to reduce the biasing current if the voltage of the incoming signal is greater than or equal to a voltage overdrive threshold. 
 
     
     
       2. The apparatus of  claim 1 , wherein the current-reducing circuit is connected between the voltage-controlled current source and the Radio Frequency power amplifier. 
     
     
       3. The apparatus of  claim 1 , wherein the current-reducing circuit comprises one or more transistors. 
     
     
       4. The apparatus of  claim 1 , comprising:
 a voltage level controller to receive the incoming signal, to check whether the voltage of the incoming signal is greater than or equal to the voltage overdrive threshold, and to activate the current-reducing circuit if the voltage of the incoming signal is greater than or equal to the voltage overdrive threshold. 
 
     
     
       5. The apparatus of  claim 4 , wherein the voltage level controller is to deactivate the current-reducing circuit if the voltage of the incoming signal is smaller than the voltage overdrive threshold. 
     
     
       6. The apparatus of  claim 1 , wherein the overdrive voltage threshold is at least ten percent greater than the triggering voltage threshold. 
     
     
       7. The apparatus of  claim 1 , wherein the incoming signal comprises a signal generated by a Radio Frequency Integrated Circuit. 
     
     
       8. The apparatus of  claim 1 , wherein the apparatus comprises a device selected from a group consisting of:
 a Radio Frequency transmitter, a Radio Frequency transceiver, a wireless communication device, a wireless communication station, a wireless Access Point, and a wireless Base Station. 
 
     
     
       9. A method comprising:
 receiving from a Radio Frequency baseband module a signal indicating a request to activate a Radio Frequency power amplifier; 
 if a voltage of the signal is greater than or equal to a triggering voltage threshold, activating a voltage-controlled current source connected to the Radio Frequency power amplifier; and 
 if the voltage of the signal is greater than or equal to an overdrive voltage threshold, activating a current-reducing circuit associated with the voltage-controlled current source. 
 
     
     
       10. The method of  claim 9 , wherein activating the current-reducing circuit comprises activating a current-reducing circuit connected between the voltage-controlled current source and the Radio Frequency power amplifier. 
     
     
       11. The method of  claim 10 , wherein activating the current-reducing circuit comprises activating the current-reducing circuit based on a command received from a voltage level controller. 
     
     
       12. The method of  claim 9 , comprising:
 deactivating the current-reducing circuit if the voltage of the signal is smaller than the overdrive voltage threshold. 
 
     
     
       13. The method of  claim 9 , wherein the receiving comprises:
 receiving the signal from a Radio Frequency Integrated Circuit. 
 
     
     
       14. The method of  claim 9 , wherein the overdrive voltage threshold is at least fifteen percent greater than the triggering voltage threshold.